{"id":4118,"date":"2019-04-15T19:03:46","date_gmt":"2019-04-15T11:03:46","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=4118"},"modified":"2019-04-15T19:03:46","modified_gmt":"2019-04-15T11:03:46","slug":"dba-%e5%bf%85%e4%bc%9a%e7%9a%84-mysql-5-7-%e6%96%b0%e7%89%b9%e6%80%a7","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=4118","title":{"rendered":"DBA \u5fc5\u4f1a\u7684 MySQL 5.7 \u65b0\u7279\u6027"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u6700\u8fd1\u6211\u4eec\u5728\u4f7f\u7528 MySQL \u7684\u65f6\u5019\uff0c\u9047\u5230\u4e86\u4e00\u4e2a\u95ee\u9898\u3002\u4e00\u4e2a\u7ebf\u4e0a\u7cfb\u7edf\u7684\u6574\u4e2a MySQL \u6570\u636e\u5e93\u5b9e\u9645\u5927\u5c0f\u53ea\u6709 1.3 G\u3002\u4f46\u662f\u963f\u91cc\u4e91\u5374\u7ed9\u6211\u4eec\u9891\u7e41\u7684\u53d1\u62a5\u8b66\u4fe1\u606f\uff0c\u8bf4\u6211\u4eec\u7684 10G \u7a7a\u95f4\u5360\u7528\u5df2\u8d85\u8fc7 80%\u3002\u4e5f\u5c31\u662f\u8bf4\u6574\u4e2a\u6570\u636e\u5e93\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u5df2\u7ecf\u8d85\u8fc7 8G \u4e86\u3002\u6211\u53cd\u590d\u7684\u786e\u8ba4\u4e86\uff0c\u6211\u7684\u6570\u636e\u5e93\u6574\u4e2a\u5927\u5c0f\u624d 1.3 G\u3002\u5907\u4efd\u548c binlog \u90fd\u4e0d\u5360\u7528\u5b9e\u4f8b\u7a7a\u95f4\uff0c\u4e3a\u6bdb\u8bf4\u6211\u4eec\u5360\u4e86 8G\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u756a\uff0c\u767e\u5ea6\uff0c\u8c37\u6b4c\u4e09\u90e8\u66f2\u4e4b\u540e\uff0c\u53d1\u73b0\u963f\u91cc\u4e91\u4e0a\u6ca1\u6709\u5408\u7406\u7684\u63cf\u8ff0\uff0c\u4e8e\u662f\u53ea\u80fd\u63d0\u4ea4\u4e00\u4e2a\u5de5\u5355\u95ee\u95ee\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ecf\u8fc7\u4e00\u756a\u6c9f\u901a\u540e\uff0c\u53d1\u73b0\u5360\u7684 8G \u5927\u90e8\u5206\u662f\u88ab undo log \u5360\u53bb\u4e86\u3002\u65e2\u7136\u662f log\uff0c\u90a3\u4e48\u6211\u4eec\u80fd\u4e0d\u80fd\u5220\u9664\u4e00\u90e8\u5206\u5462\uff1f\u7b54\u6848\u662f 5.6 \u4e4b\u524d\uff0c\u8fd8\u771f\u4e0d\u80fd\u901a\u8fc7\u5220\u9664(?)\u89e3\u51b3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u80fd\u5220\u9664\uff0c\u662f\u56e0\u4e3a 5.6 \u4e4b\u524d\uff0c\u6ca1\u6709\u63d0\u4f9b\u8fd9\u6837\u7684\u529f\u80fd\u3002\u6709\u4eba\u5728 2003 \u5c31\u7ed9 MySQL \u63d0\u4e86 bug\uff0c\u76f4\u5230 2015 \u5e74 MySQL 5.7 \u7684\u7248\u672c\u53d1\u5e03\uff0c\u624d\u6700\u7ec8\u6709\u4e86\u89e3\u51b3\u65b9\u6848\u3002\u800c\uff0c5.6 \u4e4b\u524d\u7684\u6570\u636e\uff0c\u60f3\u8981\u5220\u9664 undo log\uff0c\u5fc5\u987b\u8981\u901a\u8fc7\u8fc1\u79fb\u6765\u89e3\u51b3\u3002\u7b80\u76f4\u662f\u5751\u6b7b\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u8bf4\uff0cMySQL 5.7 \u7684\u65b0\u7279\u6027\uff0c\u6216\u8005\u8bf4\u6bcf\u4e00\u4e2a\u7248\u672c\u7684\u65b0\u7279\u6027\uff0c\u6211\u4eec\u8fd8\u662f\u6709\u5fc5\u8981\u4e86\u89e3\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL 5.7 \u589e\u52a0\u4e86\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcgy1g23i7l3c5sj20m806omyl.jpg\" alt=\"\" \/><figcaption>MySQL 5.7 \u589e\u52a0\u4e86\u5b89\u5168\u6027<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b0\u589e JSON \u7ed3\u6784<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u968f\u7740\u975e\u7ed3\u6784\u5316\u6570\u636e\u5b58\u50a8\u9700\u6c42\u7684\u6301\u7eed\u589e\u957f\uff0c\u5404\u79cd\u975e\u7ed3\u6784\u5316\u6570\u636e\u5b58\u50a8\u7684\u6570\u636e\u5e93\u5e94\u8fd0\u800c\u751f\uff08\u5982MongoDB\uff09\u3002\u4ece\u6700\u65b0\u7684\u6570\u636e\u5e93\u4f7f\u7528\u6392\u884c\u699c\u6765\u770b\uff0cMongoDB\u5df2\u7ecf\u8d85\u8fc7\u4e86PostgreSQL\uff0c\u5176\u706b\u70ed\u7a0b\u5ea6\u53ef\u89c1\u4e00\u6591\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u5927\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e5f\u4e0d\u7518\u793a\u5f31\uff0c\u7eb7\u7eb7\u63d0\u4f9b\u5bf9JSON\u7684\u652f\u6301\uff0c\u4ee5\u5e94\u5bf9\u975e\u7ed3\u6784\u5316\u6570\u636e\u5e93\u7684\u6311\u6218\u3002MySQL\u6570\u636e\u5e93\u4ece5.7.8\u7248\u672c\u5f00\u59cb\uff0c\u4e5f\u63d0\u4f9b\u4e86\u5bf9JSON\u7684\u652f\u6301\u3002\u5176\u4f7f\u7528\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE xttblog (jdoc JSON);\nINSERT INTO xttblog VALUES('{\"key1\": \"value1\", \"key2\": \"value2\"}');<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL\u5bf9\u652f\u6301JSON\u7684\u505a\u6cd5\u662f\uff0c\u5728server\u5c42\u63d0\u4f9b\u4e86\u4e00\u5806\u4fbf\u4e8e\u64cd\u4f5cJSON\u7684\u51fd\u6570\uff0c\u81f3\u4e8e\u5b58\u50a8\uff0c\u5c31\u662f\u7b80\u5355\u5730\u5c06JSON\u7f16\u7801\u6210BLOB\uff0c\u7136\u540e\u4ea4\u7531\u5b58\u50a8\u5f15\u64ce\u5c42\u8fdb\u884c\u5904\u7406\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cMySQL 5.7\u7684JSON\u652f\u6301\u4e0e\u5b58\u50a8\u5f15\u64ce\u6ca1\u6709\u5173\u7cfb\uff0cMyISAM \u5b58\u50a8\u5f15\u64ce\u4e5f\u652f\u6301JSON \u683c\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL\u652f\u6301JSON\u4ee5\u540e\uff0c\u603b\u662f\u907f\u514d\u4e0d\u4e86\u62ff\u6765\u4e0eMongoDB\u8fdb\u884c\u4e00\u4e9b\u6bd4\u8f83\u3002\u4f46\u662f\uff0cMySQL\u5bf9JSON\u7684\u652f\u6301\uff0c\u81f3\u5c11\u6709\u4e24\u70b9\u80fd\u591f\u5b8c\u80dcMongoDB\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u53ef\u4ee5\u6df7\u5408\u5b58\u50a8\u7ed3\u6784\u5316\u6570\u636e\u548c\u975e\u7ed3\u6784\u5316\u6570\u636e\uff0c\u540c\u65f6\u62e5\u6709\u5173\u7cfb\u578b\u6570\u636e\u5e93\u548c\u975e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u4f18\u70b9<\/li><li>\u80fd\u591f\u63d0\u4f9b\u5b8c\u6574\u7684\u4e8b\u52a1\u652f\u6301<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL \u65b0\u589e generate column<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">generated column\u662fMySQL 5.7\u5f15\u5165\u7684\u65b0\u7279\u6027\uff0c\u6240\u8c13generated column\uff0c\u5c31\u662f\u6570\u636e\u5e93\u4e2d\u8fd9\u4e00\u5217\u7531\u5176\u4ed6\u5217\u8ba1\u7b97\u800c\u5f97\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff0c\u77e5\u9053\u76f4\u89d2\u4e09\u89d2\u5f62\u7684\u4e24\u6761\u76f4\u89d2\u8fb9\uff0c\u8981\u6c42\u76f4\u89d2\u4e09\u89d2\u5f62\u7684\u9762\u79ef\u3002\u5f88\u660e\u663e\uff0c\u9762\u79ef\u53ef\u4ee5\u901a\u8fc7\u4e24\u6761\u76f4\u89d2\u8fb9\u8ba1\u7b97\u800c\u5f97\uff0c\u90a3\u4e48\uff0c\u8fd9\u65f6\u5019\u5c31\u53ef\u4ee5\u5728\u6570\u636e\u5e93\u4e2d\u53ea\u5b58\u653e\u76f4\u89d2\u8fb9\uff0c\u9762\u79ef\u4f7f\u7528generated column\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE xttblog (sidea DOUBLE, sideb DOUBLE, area DOUBLE AS (sidea * sideb \/ 2));\ninsert into xttblog(sidea, sideb) values(3, 4);\nselect * from xttblog;\n+-------+-------+------+\n| sidea | sideb | area |\n+-------+-------+------+\n|     3 |     4 |    6 |\n+-------+-------+------+<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728MySQL 5.7\u4e2d\uff0c\u652f\u6301\u4e24\u79cdgenerated column\uff0c\u5373virtual generated column\u548cstored generated column\uff0c\u524d\u8005\u53ea\u5c06generated column\u4fdd\u5b58\u5728\u6570\u636e\u5b57\u5178\u4e2d\uff08\u8868\u7684\u5143\u6570\u636e\uff09\uff0c\u5e76\u4e0d\u4f1a\u5c06\u8fd9\u4e00\u5217\u6570\u636e\u6301\u4e45\u5316\u5230\u78c1\u76d8\u4e0a\uff1b\u540e\u8005\u4f1a\u5c06generated column\u6301\u4e45\u5316\u5230\u78c1\u76d8\u4e0a\uff0c\u800c\u4e0d\u662f\u6bcf\u6b21\u8bfb\u53d6\u7684\u65f6\u5019\u8ba1\u7b97\u6240\u5f97\u3002\u5f88\u660e\u663e\uff0c\u540e\u8005\u5b58\u653e\u4e86\u53ef\u4ee5\u901a\u8fc7\u5df2\u6709\u6570\u636e\u8ba1\u7b97\u800c\u5f97\u7684\u6570\u636e\uff0c\u9700\u8981\u66f4\u591a\u7684\u78c1\u76d8\u7a7a\u95f4\uff0c\u4e0evirtual column\u76f8\u6bd4\u5e76\u6ca1\u6709\u4f18\u52bf\u3002\u56e0\u6b64\uff0c\u5728\u4e0d\u6307\u5b9agenerated column\u7684\u7c7b\u578b\u65f6\uff0c\u9ed8\u8ba4\u662fvirtual column\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>show create table xttblog\\G\n*************************** 1. row ***************************\n       Table: xttblog\nCreate Table: CREATE TABLE `xttblog` (\n  `sidea` double DEFAULT NULL,\n  `sideb` double DEFAULT NULL,\n  `area` double GENERATED ALWAYS AS (((`sidea` * `sideb`) \/ 2)) VIRTUAL\n) ENGINE=InnoDB DEFAULT CHARSET=utf-8<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u89c9\u5f97generate column\u63d0\u4f9b\u7684\u529f\u80fd\uff0c\u4e5f\u53ef\u4ee5\u5728\u7528\u6237\u4ee3\u7801\u91cc\u9762\u5b9e\u73b0\uff0c\u5e76\u6ca1\u6709\u4ec0\u4e48\u4e86\u4e0d\u8d77\u7684\u5730\u65b9\uff0c\u90a3\u4e48\uff0c\u6216\u8bb8\u8fd8\u6709\u4e00\u4e2a\u529f\u80fd\u80fd\u591f\u5438\u5f15\u6311\u5254\u7684\u4f60\uff0c\u90a3\u5c31\u662f\u4e3agenerate column\u521b\u5efa\u7d22\u5f15\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c\u6211\u4eec\u9700\u8981\u6839\u636e\u9762\u79ef\u521b\u5efa\u7d22\u5f15\u4ee5\u52a0\u5feb\u67e5\u8be2\uff0c\u5c31\u65e0\u6cd5\u5728\u7528\u6237\u4ee3\u7801\u91cc\u9762\u5b9e\u73b0\uff0c\u4f7f\u7528generate column\u5c31\u53d8\u5f97\u975e\u5e38\u7b80\u5355\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>alter table xttblog add index ix_area(area);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL 5.7 \u65b0\u589e sys schema \u7279\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sys schema \u662f MySQL 5.7.7 \u4e2d\u5f15\u5165\u7684\u4e00\u4e2a\u7cfb\u7edf\u5e93\uff0c\u5305\u542b\u4e86\u4e00\u7cfb\u5217\u89c6\u56fe\u3001\u51fd\u6570\u548c\u5b58\u50a8\u8fc7\u7a0b\uff0c \u8be5\u9879\u76ee\u4e13\u6ce8\u4e8eMySQL\u7684\u6613\u7528\u6027\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7sys schema\u5feb\u901f\u7684\u77e5\u9053\uff0c\u54ea\u4e9b\u8bed\u53e5\u4f7f\u7528\u4e86\u4e34\u65f6\u8868\uff0c\u54ea\u4e2a\u7528\u6237\u8bf7\u6c42\u4e86\u6700\u591a\u7684io\uff0c\u54ea\u4e2a\u7ebf\u7a0b\u5360\u7528\u4e86\u6700\u591a\u7684\u5185\u5b58\uff0c\u54ea\u4e9b\u7d22\u5f15\u662f\u65e0\u7528\u7d22\u5f15\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sys schema \u4e2d\u5305\u542b\u4e86\u5927\u91cf\u7684\u89c6\u56fe\uff0c\u90a3\u4e48\uff0c\u8fd9\u4e9b\u89c6\u56fe\u7684\u4fe1\u606f\u6765\u81ea\u54ea\u91cc\u5462\uff1f\u89c6\u56fe\u4e2d\u7684\u4fe1\u606f\u5747\u6765\u81ea performance schema \u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u6709\u4e00\u4e2a\u5f88\u597d\u7684\u6bd4\u55bb\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>For Linux users I like to compare performance_schema to \/proc, and SYS to vmstat.<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e5f\u5c31\u662f\u8bf4\uff0cperformance schema\u63d0\u4f9b\u4e86\u4fe1\u606f\u6e90\uff0c\u4f46\u662f\uff0c\u6ca1\u6709\u5f88\u597d\u7684\u5c06\u8fd9\u4e9b\u4fe1\u606f\u7ec4\u7ec7\u6210\u6709\u7528\u7684\u4fe1\u606f\uff0c\u4ece\u800c\u6ca1\u6709\u5f88\u597d\u7684\u53d1\u6325\u5b83\u4eec\u7684\u4f5c\u7528\u3002\u800csys schema\u4f7f\u7528performance schema\u4fe1\u606f\uff0c\u901a\u8fc7\u89c6\u56fe\u7684\u65b9\u5f0f\u7ed9\u51fa\u89e3\u51b3\u5b9e\u9645\u95ee\u9898\u7684\u7b54\u6848\u3002<br> \u4f8b\u5982\uff0c\u4e0b\u9762\u8fd9\u4e9b\u95ee\u9898\uff0c\u5728MySQL 5.7\u4e4b\u524d\uff0c\u9700\u8981\u501f\u52a9\u5916\u90e8\u5de5\u5177\u624d\u80fd\u77e5\u9053\uff0c\u5728MySQL 5.7\u4e2d\uff0c\u76f4\u63a5\u67e5\u8be2sys\u5e93\u4e0b\u76f8\u5e94\u7684\u8868\u5c31\u80fd\u5f97\u5230\u7b54\u6848\uff1a\u5982\u4f55\u67e5\u770b\u6570\u636e\u5e93\u4e2d\u7684\u5197\u4f59\u7d22\u5f15\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from sys.schema_redundant_indexes;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4f55\u83b7\u53d6\u672a\u4f7f\u7528\u7684\u7d22\u5f15\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from schema_unused_indexes;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u4f55\u67e5\u770b\u4f7f\u7528\u5168\u8868\u626b\u63cf\u7684SQL\u8bed\u53e5\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from statements_with_full_table_scans<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL 5.7\u4e3a\u4e86\u652f\u6301online buffer pool resize\uff0c\u5f15\u5165chunk\u7684\u6982\u5ff5\uff0c\u6bcf\u4e2achunk\u9ed8\u8ba4\u662f128M\uff0c\u5f53\u6211\u4eec\u5728\u7ebf\u4fee\u6539buffer pool\u7684\u65f6\u5019\uff0c\u4ee5chunk\u4e3a\u5355\u4f4d\u8fdb\u884c\u589e\u957f\u6216\u6536\u7f29\u3002\u8fd9\u4e2a\u53c2\u6570\u7684\u5f15\u5165\uff0c\u5bf9innodb_buffer_pool_size\u7684\u914d\u7f6e\u6709\u4e86\u4e00\u5b9a\u7684\u5f71\u54cd\u3002innodb\u8981\u6c42buffer pool size\u662finnodb_buffer_pool_chunk_size* innodb_buffer_pool_instances\u7684\u500d\u6570\uff0c\u5982\u679c\u4e0d\u662f\uff0c\u5c06\u4f1a\u9002\u5f53\u8c03\u5927innodb_buffer_pool_size\uff0c\u4ee5\u6ee1\u8db3\u8981\u6c42\uff0c\u56e0\u6b64\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0buffer pool\u7684\u5b9e\u9645\u5206\u914d\u6bd4\u914d\u7f6e\u6587\u4ef6\u4e2d\u6307\u5b9a\u7684size\u8981\u5927\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Online DDL MySQL 5.7\u652f\u6301\u91cd\u547d\u540d\u7d22\u5f15\u548c\u4fee\u6539varchar\u7684\u5927\u5c0f\uff0c\u8fd9\u4e24\u9879\u64cd\u4f5c\u5728\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0c\u90fd\u9700\u8981\u91cd\u5efa\u7d22\u5f15\u6216\u8868\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ALTER TABLE t1 ALGORITHM=INPLACE, CHANGE COLUMN c1 c1 VARCHAR(255);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u7ebf\u5f00\u542fGTID\uff0c\u5728\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0c\u7531\u4e8e\u4e0d\u652f\u6301\u5728\u7ebf\u5f00\u542fGTID\uff0c\u7528\u6237\u5982\u679c\u5e0c\u671b\u5c06\u4f4e\u7248\u672c\u7684\u6570\u636e\u5e93\u5347\u7ea7\u5230\u652f\u6301GTID\u7684\u6570\u636e\u5e93\u7248\u672c\uff0c\u9700\u8981\u5148\u5173\u95ed\u6570\u636e\u5e93\uff0c\u518d\u4ee5GTID\u6a21\u5f0f\u542f\u52a8\uff0c\u6240\u4ee5\u5bfc\u81f4\u5347\u7ea7\u8d77\u6765\u7279\u522b\u9ebb\u70e6\u3002MySQL 5.7\u4ee5\u540e\uff0c\u8fd9\u4e2a\u95ee\u9898\u4e0d\u590d\u5b58\u5728\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6027\u80fd\u4e00\u76f4\u90fd\u662f\u7528\u6237\u6700\u5173\u5fc3\u7684\u95ee\u9898\uff0c\u5728MySQL\u6bcf\u6b21\u65b0\u7248\u672c\u4e2d\uff0c\u90fd\u4f1a\u6709\u4e0d\u5c11\u6027\u80fd\u63d0\u5347\u3002\u5728MySQL 5.7\u4e2d\uff0c\u6027\u80fd\u76f8\u5173\u7684\u6539\u8fdb\u975e\u5e38\u591a\uff0c\u8fd9\u91cc\u4ec5\u4ecb\u7ecd\u90e8\u5206\u6539\u8fdb\uff0c\u5305\u62ec\u4e34\u65f6\u8868\u76f8\u5173\u7684\u6027\u80fd\u6539\u8fdb\u3001\u53ea\u8bfb\u4e8b\u52a1\u7684\u6027\u80fd\u4f18\u5316\u3001\u8fde\u63a5\u5efa\u7acb\u901f\u5ea6\u7684\u4f18\u5316\u548c\u590d\u5236\u6027\u80fd\u7684\u6539\u8fdb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e34\u65f6\u8868\u7684\u6027\u80fd\u6539\u8fdb\u3002MySQL 5.7 \u4e3a\u4e86\u63d0\u9ad8\u4e34\u65f6\u8868\u76f8\u5173\u7684\u6027\u80fd\uff0c\u5bf9\u4e34\u65f6\u8868\u76f8\u5173\u7684\u90e8\u5206\u8fdb\u884c\u4e86\u5927\u5e45\u4fee\u6539\uff0c\u5305\u62ec\u5f15\u5165\u65b0\u7684\u4e34\u65f6\u8868\u7a7a\u95f4\uff1b\u5bf9\u4e8e\u4e34\u65f6\u8868\u7684DDL\uff0c\u4e0d\u6301\u4e45\u5316\u76f8\u5173\u8868\u5b9a\u4e49\uff1b\u5bf9\u4e8e\u4e34\u65f6\u8868\u7684DML\uff0c\u4e0d\u5199redo\uff0c\u5173\u95edchange buffer\u7b49\u3002\u6240\u6709\u4e34\u65f6\u8868\u7684\u6539\u52a8\uff0c\u90fd\u57fa\u4e8e\u4ee5\u4e0b\u4e24\u4e2a\u4e8b\u5b9e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u4e34\u65f6\u8868\u53ea\u5728\u5f53\u524d\u4f1a\u8bdd\u4e2d\u53ef\u89c1<\/li><li>\u4e34\u65f6\u8868\u7684\u751f\u547d\u5468\u671f\u662f\u5f53\u524d\u8fde\u63a5\uff08MySQL\u5b95\u673a\u6216\u91cd\u542f\uff0c\u5219\u5f53\u524d\u8fde\u63a5\u7ed3\u675f\uff09<\/li><li><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e5f\u5c31\u662f\u8bf4\uff0c\u5bf9\u4e8e\u4e34\u65f6\u8868\u7684\u64cd\u4f5c\uff0c\u4e0d\u9700\u8981\u5176\u4ed6\u6570\u636e\u4e00\u6837\u4e25\u683c\u5730\u8fdb\u884c\u4e00\u81f4\u6027\u4fdd\u8bc1\u3002\u901a\u8fc7\u4e0d\u6301\u4e45\u5316\u5143\u4fe1\u606f\uff0c\u907f\u514d\u5199redo\u7b49\u65b9\u5f0f\uff0c\u51cf\u5c11\u4e34\u65f6\u8868\u64cd\u4f5c\u7684IO\uff0c\u4ee5\u63d0\u9ad8\u4e34\u65f6\u8868\u64cd\u4f5c\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ea\u8bfb\u4e8b\u52a1\u6027\u80fd\u6539\u8fdb\u3002\u4f17\u6240\u5468\u77e5\uff0c\u5728\u4f20\u7edf\u7684OLTP\u5e94\u7528\u4e2d\uff0c\u8bfb\u64cd\u4f5c\u8fdc\u591a\u4e8e\u5199\u64cd\u4f5c\uff0c\u5e76\u4e14\uff0c\u8bfb\u64cd\u4f5c\u4e0d\u4f1a\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u4fee\u6539\uff0c\u5982\u679c\u662f\u975e\u9501\u5b9a\u8bfb\uff0c\u8bfb\u64cd\u4f5c\u4e5f\u4e0d\u9700\u8981\u8fdb\u884c\u52a0\u9501\u3002\u56e0\u6b64\uff0c\u5bf9\u53ea\u8bfb\u4e8b\u52a1\u8fdb\u884c\u4f18\u5316\uff0c\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728MySQL 5.6\u4e2d\uff0c\u5df2\u7ecf\u5bf9\u53ea\u8bfb\u4e8b\u52a1\u8fdb\u884c\u4e86\u8bb8\u591a\u4f18\u5316\u3002\u4f8b\u5982\uff0c\u5c06MySQL\u5185\u90e8\u5b9e\u73b0\u4e2d\u7684\u4e8b\u52a1\u94fe\u8868\u5206\u4e3a\u53ea\u8bfb\u4e8b\u52a1\u94fe\u8868\u548c\u666e\u901a\u4e8b\u52a1\u94fe\u8868\uff0c\u8fd9\u6837\u5728\u521b\u5efaReadView\u7684\u65f6\u5019\uff0c\u9700\u8981\u904d\u5386\u4e8b\u52a1\u94fe\u8868\u957f\u5ea6\u5c31\u4f1a\u5c0f\u5f88\u591a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728MySQL 5.7\u4e2d\uff0c\u9996\u5148\u5047\u8bbe\u4e00\u4e2a\u4e8b\u52a1\u662f\u4e00\u4e2a\u53ea\u8bfb\u4e8b\u52a1\uff0c\u53ea\u6709\u5728\u8be5\u4e8b\u52a1\u53d1\u8d77\u4e86\u4fee\u6539\u64cd\u4f5c\u65f6\uff0c\u624d\u4f1a\u5c06\u5176\u8f6c\u6362\u4e3a\u4e00\u4e2a\u666e\u901a\u4e8b\u52a1\u3002MySQL 5.7\u901a\u8fc7\u907f\u514d\u4e3a\u53ea\u8bfb\u4e8b\u52a1\u5206\u914d\u4e8b\u52a1ID\uff0c\u4e0d\u4e3a\u53ea\u8bfb\u4e8b\u52a1\u5206\u914d\u56de\u6eda\u6bb5\uff0c\u51cf\u5c11\u9501\u7ade\u4e89\u7b49\u591a\u79cd\u65b9\u5f0f\uff0c\u4f18\u5316\u4e86\u53ea\u8bfb\u4e8b\u52a1\u7684\u5f00\u9500\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u5e93\u7684\u6574\u4f53\u6027\u80fd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u52a0\u901f\u8fde\u63a5\u5904\u7406\u3002\u5728MySQL 5.7\u4e4b\u524d\uff0c\u53d8\u91cf\u7684\u521d\u59cb\u5316\u64cd\u4f5c\uff08THD\u3001VIO\uff09\u90fd\u662f\u5728\u8fde\u63a5\u63a5\u6536\u7ebf\u7a0b\u91cc\u9762\u5b8c\u6210\u7684\uff0c\u73b0\u5728\u5c06\u8fd9\u4e9b\u5de5\u4f5c\u4e0b\u53d1\u7ed9\u5de5\u4f5c\u7ebf\u7a0b\uff0c\u4ee5\u51cf\u5c11\u8fde\u63a5\u63a5\u6536\u7ebf\u7a0b\u7684\u5de5\u4f5c\u91cf\uff0c\u63d0\u9ad8\u8fde\u63a5\u7684\u5904\u7406\u901f\u5ea6\u3002\u8fd9\u4e2a\u4f18\u5316\u5bf9\u90a3\u4e9b\u9891\u7e41\u5efa\u7acb\u77ed\u8fde\u63a5\u7684\u5e94\u7528\uff0c\u5c06\u4f1a\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u590d\u5236\u6027\u80fd\u7684\u6539\u8fdb\u3002MySQL\u7684\u590d\u5236\u5ef6\u8fdf\u662f\u4e00\u76f4\u88ab\u8bdf\u75c5\u7684\u95ee\u9898\u4e4b\u4e00\uff0c\u6b23\u559c\u7684\u662f\uff0cMySQL 5.7\u7248\u672c\u5df2\u7ecf\u652f\u6301\u201d\u771f\u6b63\u201d\u7684\u5e76\u884c\u590d\u5236\u529f\u80fd\u3002MySQL 5.7\u5e76\u884c\u590d\u5236\u7684\u601d\u60f3\u7b80\u5355\u6613\u61c2\uff0c\u7b80\u800c\u8a00\u4e4b\uff0c\u5c31\u662f\u201d\u4e00\u4e2a\u7ec4\u63d0\u4ea4\u7684\u4e8b\u52a1\u90fd\u662f\u53ef\u4ee5\u5e76\u884c\u56de\u653e\u7684\u201d\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u4e8b\u52a1\u90fd\u5df2\u8fdb\u5165\u5230\u4e8b\u52a1\u7684prepare\u9636\u6bb5\uff0c\u5219\u8bf4\u660e\u4e8b\u52a1\u4e4b\u95f4\u6ca1\u6709\u4efb\u4f55\u51b2\u7a81\uff08\u5426\u5219\u5c31\u4e0d\u53ef\u80fd\u63d0\u4ea4\uff09\u3002MySQL 5.7\u4ee5\u540e\uff0c\u590d\u5236\u5ef6\u8fdf\u95ee\u9898\u6c38\u4e0d\u5b58\u5728\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e3a\u4e86\u517c\u5bb9MySQL <br> 5.6\u57fa\u4e8e\u5e93\u7684\u5e76\u884c\u590d\u5236\uff0c5.7\u5f15\u5165\u4e86\u65b0\u7684\u53d8\u91cfslave-parallel-type\uff0c\u8be5\u53d8\u91cf\u53ef\u4ee5\u914d\u7f6e\u6210DATABASE\uff08\u9ed8\u8ba4\uff09\u6216LOGICAL_CLOCK\u3002\u53ef\u4ee5\u770b\u5230\uff0cMySQL\u7684\u9ed8\u8ba4\u914d\u7f6e\u662f\u5e93\u7ea7\u522b\u7684\u5e76\u884c\u590d\u5236\uff0c\u4e3a\u4e86\u5145\u5206\u53d1\u6325MySQL 5.7\u7684\u5e76\u884c\u590d\u5236\u7684\u529f\u80fd\uff0c\u6211\u4eec\u9700\u8981\u5c06slave-parallel-type\u914d\u7f6e\u6210LOGICAL_CLOCK\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u8003\u8d44\u6599<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li><a href=\"http:\/\/mysqlserverteam.com\/whats-new-in-mysql-5-7-generally-available\/\">What\u2019s New in MySQL 5.7<\/a><\/li><li><a href=\"http:\/\/dev.mysql.com\/doc\/refman\/5.7\/en\/mysql-nutshell.html\">What Is New in MySQL 5.7<\/a><\/li><li><a href=\"http:\/\/www.innomysql.com\/article\/16317.html\">MySQL 5.7 \u5e76\u884c\u590d\u5236\u5b9e\u73b0\u539f\u7406\u4e0e\u8c03\u4f18<\/a><\/li><\/ol>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=4118\">DBA \u5fc5\u4f1a\u7684 MySQL 5.7 \u65b0\u7279\u6027<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u6211\u4eec\u5728\u4f7f\u7528 MySQL \u7684\u65f6\u5019\uff0c\u9047\u5230\u4e86\u4e00\u4e2a\u95ee\u9898\u3002\u4e00\u4e2a\u7ebf\u4e0a\u7cfb\u7edf\u7684\u6574\u4e2a MySQL \u6570\u636e\u5e93\u5b9e\u9645\u5927\u5c0f\u53ea\u6709 1.3 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